from django.db import models
from django.contrib.auth.models import AbstractUser
from itsdangerous import TimedJSONWebSignatureSerializer as TJWSS
from django.conf import settings
from . import constants
from meiduo_mall.utils.models import BaseModel

class User(AbstractUser):
    # 默认提供了属性：用户名、密码、邮箱....
    # 定义新的属性，向表中添加
    mobile = models.CharField(max_length=11, unique=True, verbose_name='手机号')
    email_active = models.BooleanField(default=False, verbose_name='邮箱验证状态')

    #默认地址
    default_address = models.ForeignKey('Address', related_name='users', null=True, blank=True,
                                        on_delete=models.SET_NULL, verbose_name='默认地址')


    class Meta:
        db_table = 'tb_users'
        verbose_name = '用户'
        verbose_name_plural = verbose_name


    def email_dumps(self):
        user_dict={
            'user_id':self.id

        }
        tjwss=TJWSS(settings.SECRET_KEY,constants.EMAIL_ACTIVE_EXPIRES)

        return tjwss.dumps(user_dict).decode()

    @classmethod
    def email_loads(cls,token):
        try:
            tjwss = TJWSS(settings.SECRET_KEY,constants.EMAIL_ACTIVE_EXPIRES)
            user_dict = tjwss.loads(token)

        except:
            return None
        else:
            user=User.objects.get(pk=user_dict.get('user_id'))
            return user




class Address(BaseModel):
    """
    用户地址
    """
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='addresses', verbose_name='用户')
    title = models.CharField(max_length=20, verbose_name='地址名称')
    receiver = models.CharField(max_length=20, verbose_name='收货人')
    province = models.ForeignKey('areas.AreaInfo', on_delete=models.PROTECT, related_name='province_addresses', verbose_name='省')
    city = models.ForeignKey('areas.AreaInfo', on_delete=models.PROTECT, related_name='city_addresses', verbose_name='市')
    district = models.ForeignKey('areas.AreaInfo', on_delete=models.PROTECT, related_name='district_addresses', verbose_name='区')
    place = models.CharField(max_length=50, verbose_name='地址')
    mobile = models.CharField(max_length=11, verbose_name='手机')
    tel = models.CharField(max_length=20, null=True, blank=True, default='', verbose_name='固定电话')
    email = models.CharField(max_length=30, null=True, blank=True, default='', verbose_name='电子邮箱')
    is_deleted = models.BooleanField(default=False, verbose_name='逻辑删除')

    class Meta:
        db_table = 'tb_address'
        verbose_name = '用户地址'
        verbose_name_plural = verbose_name
        ordering = ['-update_time']